These databases focus on key journals and publications in specific fields.
They offer more advanced search features, and can result in better, focused search results. Look for the icon with "Find It!" to locate the article in Library collections.
See the "Articles" tabs on specific Subject Guides to find databases for articles in specific areas of study.
Want to know who has cited an article? Google Scholar and Web of Science provide citation linking tools.
Here are some collections of online journals, but if you're exploring a topic, I suggest using a journal article index such as those listed above.